while(!feof($fe))
{	$line1 = fgets($fe);	//username
	$line2 = fgets($fe);	//password
	$arr1 = explode(": ", $line1);
	$arr2 = explode(": ", $line2);
	$fileUsername = trim($arr1[1]);
	$filePassword = trim($arr2[1]);
	if(($username == $fileUsername) && ($password == $filePassword))
	{	$flag = "accepted";
		session_start();				//start session
		$_SESSION['username']= $username;	//set username as session variable
		header("Location:employer.php");
		break;
	}
	for($i = 0; $i<7; $i++)
	{	$line = fgets($fe);
	}

}

<?php
session_start();
include ('session.php');
?>

<?php
if(isset($_SESSION['username']))
{
}
else
{	header("Location:login.html");
}
?>